La persona titular del vehículo puede presentar alegaciones.

La persona titular is a formal, administrative way to say the person who is the holder / the registered holder.

A few nuances:

• titular often means holder in official or legal language.
• In the context of a vehicle, it usually refers to the registered holder of the vehicle.
• propietario means owner, but legal ownership and the official registered holder are not always exactly the same thing.
• el titular is also possible in some contexts, but la persona titular is more explicit and more inclusive in official Spanish.

So this phrase sounds very much like bureaucratic or legal Spanish.

Because persona is a grammatically feminine noun in Spanish, no matter whether it refers to a man or a woman.

That is why you get:

• la persona
• la persona titular

This is about grammatical gender, not biological sex.

For example, even if the registered holder is male, Spanish still says:

• La persona titular

Here, titular means something like:

• holder
• registered holder
• sometimes named holder

It is a very common word in formal Spanish for someone who officially holds a right, account, permit, policy, or registration.

Examples:

• el titular de la cuenta = the account holder
• el titular del permiso = the permit holder
• la persona titular del vehículo = the registered holder of the vehicle

So here it does not mean headline, even though titular can also mean that in other contexts.

Because de + el contracts to del in Spanish.

So:

• de + el vehículo → del vehículo

This contraction is normally mandatory.

Compare:

• el libro del profesor = the teacher’s book
• la puerta del coche = the car door

The only common exception is when el is part of a proper name, such as:

• de El Escorial

But here vehículo is a normal noun, so del is required.

Puede presentar means can submit, may submit, or is allowed to submit, depending on context.

• puede = can / may / is able to
• presentar = to present / to submit / to file

In this kind of official sentence, puede often expresses permission or legal possibility, not physical ability.

So it is closer to:

• The registered holder may submit... or
• The registered holder can file...

Not in the usual English sense of standing up and presenting something publicly.

In administrative and legal Spanish, presentar often means:

• to submit
• to file
• to lodge

So presentar alegaciones is better translated as:

• to submit objections
• to file representations
• to make submissions depending on the exact legal context.

This is a good example where a word looks familiar but is used a bit differently from English.

Not exactly. This is a very important false friend.

In legal or administrative Spanish, alegaciones usually means:

• arguments
• objections
• representations
• statements in one’s defense
• submissions

It often refers to what someone sends to an authority in response to a notice or procedure.

English allegations usually means claims or accusations, often of wrongdoing. That is usually not the best meaning here.

So presentar alegaciones usually means something more like:

• to submit objections or
• to make representations

Spanish often leaves out the article with plural nouns when speaking in a general sense, especially after certain verbs.

So:

• presentar alegaciones = to submit objections / representations

This sounds natural and general.

You could sometimes see an article in a more specific context, for example:

• presentar las alegaciones correspondientes
• presentar sus alegaciones

But in a general rule or instruction, no article is very normal.

Here, titular is functioning as an adjective modifying persona.

So the structure is:

• la persona = the person
• titular = holder / registered holder
• del vehículo = of the vehicle

Together:

• la persona titular del vehículo

That said, titular can also be used as a noun in other sentences:

• El titular puede presentar alegaciones.

There, titular is the noun: the holder.

Because in Spanish, adjectives usually come after the noun.

So:

• persona titular not usually
• titular persona

This is the normal word order.

Also, in formal legal or administrative Spanish, combinations like these are very common:

• persona interesada
• órgano competente
• documentación requerida
• persona titular

Possibly, but the meaning and tone would change.

• dueño = owner, everyday word
• propietario = owner, more formal
• titular = holder / registered holder, often official or legal

In vehicle paperwork, titular is often preferred because it refers to the person officially recorded in the registration.

So:

• La persona titular del vehículo... sounds bureaucratic and precise.
• El dueño del vehículo... sounds more everyday.
• El propietario del vehículo... sounds formal, but may focus more on ownership than official registration.

Most likely permission or legal entitlement.

In an official context, puede presentar alegaciones usually means:

• the person is allowed to
• the person has the right to
• the person may

It is less likely to mean physical ability, like is capable of.

So the sentence is probably saying that the registered holder has the right, within the procedure, to submit objections or representations.

A more natural English rendering would often be something like:

• The registered holder of the vehicle may submit objections.
• The registered holder of the vehicle may file representations.
• The vehicle’s registered holder can submit a response.

The best choice depends on the legal setting, but allegations would usually sound unnatural or misleading in English here.